High lift loader



y 1948' D. s. HOOVER 2,441,070

' 1mm LIFT LOADER Filed June 21, ,1946 2 Sheets-Sheet 1 INVENTOR. FAN/4 67 Ho o my? May 4, 1948 D. S. HOOVER HIGH LIFT LOADER Filed June 21, 1946 TRA C TOR 2 Sheets-Sheet 2 TRACTOR INVENTOR. I ,Dl/V/EL 6- fioa v5 Patented May 4, 1948 UNITED STATES PATENT OFFICE Daniel S. Hoover, Mansfield, Ohio Application June 21, 1946, Serial No. 678,340

This invention relates to a high lift loader, and has for one of its objects the production of a simple and efficient means for lifting a load to a sufilcient height to dump the load into a truck, and then moving or swinging the frame forwardly to a dumping position without backing the supporting tractor away from the truck.

A further object of this invention is the production of a simple and eflicient means for tilting the scoop to adjust the angle of the cutting edge thereof,

Other objects and advantages of the present invention will appear throughout the following specification and claims.

- In the drawings:

Figure l is a side elevational view of the loader, the supporting tractor being shown in dotted lines;

Figure 2 is a side elevational view showing the scoop in an elevated position;

Figure 3 is a front elevational view;

3 Claims. (01. 214-140) Figure 4 is a front elevatlonal view with certain parts shown in section, and the scoop being removed;

Figure 5 is a perspective view of the scoop;

Figure 6 is a transverse sectional view through one of thevertical frame members;

Figure 7 is a fragmentary longitudinal sectional view through the scoop.

By referring to the drawings, it will be seen that it designates the tractor-engaging yoke which is secured to and extends along the sides and across the front of the tractor it, the tractor being shown in dotted lines. A pair of sup porting links if constituting hangers are pivoted to the yoke it, as at if, each link if being pivoted upon opposite sides of the yoke. A vertical frame member Wis pivoted to the forward end of each link l2, the frame members extending in substantially parallel relation in an upward direction. Each frame member it is U-shaped in cross-section with the channel thereof facing forwardly, as shown in Figure 3.

A scoop-lifting frame i5 is carried by the vertical frame It and comprises a pair of parallel lifting arms l6 which are pivotally secured to the upper ends of the frame members l4. These arms is are inclined rearwardly at their upper ends and are connected by means of a transverse portion iii. A flexible bridle or checkchain IQ of any suitable type is secured to this transverse portion l8 at one end and is anchored to the tractor l i, as at 20.

A brace strap 2! ties the upper ends of the frame members it together, anda forwardly excarried intermediate the A bracket 23 is also hung tending bracket 22 is ends of the strap 2!.

from the front of the yoke I0 and depends thereinterposed between the link if and the frame member if, as shown in Figure 1, and a similar arrangement may be provided on'each side of the-apparatus between each link [2 and frame member id, to swing the frame members it forwardly or rearwardly.

Each lifting arm I6 is provided with a forwardly extending lower end 27 and a lifting scoop 28 is pivotally secured to the ends 2'! of the arms It, as at 29. The scoop 28 is preferably provided with a central partition 30. The plunger rod SE of the'hydraulic cylinder 32 is adjustably connected to the scoop 28, as at 23. This cylinder 32 is pivotally connected to the bracket 22, as at 33. As the rod 35 is extended in the cylinder 32 in the conventional manner, the scoop it will be swung on its pivots 29' to a dumpingposition, as shown in Figure 2. The scoop 28 is provided with a. suitable forward cutting edge or blade 35 and the tilt of the scoop it may be selectively regulated by moving the plunger rod it into and out of the cylinder 25 to "adjust the depth of cut .of the blade 3 5.

It should be understood that the hydraulic cylstructure may be modified without departing from the spirit of the invention.

The operation of the loader is as follows:

The tractor ll is moved to a position to scoop up the load, and the scoop 28 is tilted to cause the blade 35 to dig into the material to be loaded. The scoop is tilted to the desired position by means of the hydraulic cylinder 32. The frame members It and the links H are raised to the desired elevation by means of the hydraulic cylinder 2% which is anchored atits lower end to the bracket 23 and at its upper end to the bracket 22. As the plunger rod 25 is extended the links if will swin upwardly thereby lifting the frame member l4 to the position shown in Figure 2. The scoop-lifting frame I! will also be swung upwardly and outwardly to the position shown in Figure 2, because of the fact that the chain l9 holds the transverse portion i8 thereof in an anchored position.

After the scoop 28 has been raised to the position shown in full line in Figure 2, the cylinder 26 is operated to swing the frame members I forwardly to the dotted line position shown in Figure 2 thereby causing the scoop to be bodily shifted forwardly. When the scoop 28 reaches this forward position, the scoop is tilted to a dumping position shown in dotted lines in Figure 2 by operating the hydraulic cylinder 32,

It should be understood that the loader first scoops up the load, then elevates the load, then shifts the load forwardly and then dumps the load from the elevated shifted position. It should be further understood that certain detail changes may be made in the structure illustrated without departing from the spirit of the invention, so long as these changes fall within the scope of the appended claims.

Having described the invention, what is claimed is: 1. A loader of the class described comprising a support, a hanger pivoted to said support, a forwardly swinging vertical frame pivoted at its lower end to said hanger, a scoop-lifting frame hinged at the upper end of said vertical frame and anchored at its opposite end to said support,

means tied to one end of said scoop-lifting frame for limiting the swinging of said scoop-lifting frame in one direction and adapted to elevate the outer end of said scoop-lifting frame as said vertical frame is swung forwardly, a hinged scoop carried by the outer end of said scoop-lifting frame, means for lifting the vertical frame and simultaneously and automatically swinging the scoop of the scoop-lifting frame upwardly, means for swinging the vertical frame' forwardly, and means for tilting said scoop to a dumping position.

2. A loader of the class described comprising a support, a hanger pivoted to said support, a forwardly swinging vertical frame pivoted at its lower end to said hanger, a scoop-lifting frame hinged at the upper end of said vertical frame,

means tied to one end of said scoop-lifting frame for limiting the swinging of said scoop-lifting frame in one direction and adapted to elevate the outer end of said scoop-lifting frame as said vertical frame is swung forwardly, a hinged scoop carried by the outer end of said scoop-lifting frame, means for lifting the vertical frame and simultan ously and automatically swinging the scoop of the scoop-lifting frame upwardly, means for swinging the vertical frame forwardly, means for tilting said scoop to a dumping position, said vertical frame comprising a plurality of channel members, and said scoop-lifting frame comprising a plurality of arms fitting longitudinally within said channel members when the scoop is in a loading position to resist lateral strain upon said 3. A loader of the class described comprising a support, a frame hinged upon said support for upward swinging movement upon said support,

means for swinging said frame forwardly, a

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Date Number Name 1,723,506 Goodlin Aug. 6, 1929 2,349,335 Baldwin May 23, 1944 2,387,656 Gledhill Oct. 23, 1945 2,387,764 Maxwell Oct. 30, 1945 2,413,097

Barker Dec. 24, 1946 

